Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas maneiras de partida Peter Voets teve?
 ###Tabelas: CREATE TABLE known_disk_logical_formats (known_disk_logical_formats_id AUTO_INCREMENT PRIMARY KEY, Platform VARCHAR, Size VARCHAR, Density VARCHAR, Bytes/ sector INT, Sectors/ track VARCHAR, Tracks/ side VARCHAR, Sides INT, Capacity VARCHAR, Encoding VARCHAR) CREATE TABLE digital_television (digital_television_id AUTO_INCREMENT PRIMARY KEY, Transmitter VARCHAR, BBCA INT, BBCB VARCHAR, D3&4 VARCHAR, ARQA VARCHAR, ARQB VARCHAR, Pol. VARCHAR, A.G. VARCHAR) CREATE TABLE week_three (week_three_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Time VARCHAR, Visiting team VARCHAR, Home team VARCHAR, Site VARCHAR, Broadcast VARCHAR, Result VARCHAR, Attendance INT) CREATE TABLE managerial_changes (managerial_changes_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Outgoing manager VARCHAR, Manner of departure VARCHAR, Date of vacancy VARCHAR, Replaced by VARCHAR, Date of appointment VARCHAR) CREATE TABLE passengers_carried_in_2010 (passengers_carried_in_2010_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Airline VARCHAR, Country VARCHAR, Passengers Carried INT, Remarks VARCHAR, Alliance VARCHAR)  
SELECT COUNT Manner of departure FROM managerial_changes WHERE Outgoing manager = Peter Voets